Oh boy. I feel your pain.
I don't know if you'd want them back. It depends on the setting, but iTunes usually compresses the photos that it puts on your iPod. Meaning, you may have had big, high-res, photos but what you'll get back might be tiny, low-res junk.
But, junk is better than nothing.
Does this help?
http://destraynor.com/serendipity/index.php?/archives/26-How-to-get-music-off-your-iPod.htmlPerhaps your photos are in there somewhere too.
And I'd highly recommend picking up an external USB drive. Keep your whole system backed up regularly.